Buckingham — UK General Election Results
Buckingham was won by Conservative at the 2019 general election, with a majority of 20,411 votes over Liberal Democrat. This page covers every general election in Buckingham from 1832 to 2019.
This constituency elected more than one MP at once in some years. Before the Redistribution of Seats Act 1885 (and in a shrinking number of boroughs through 1948), most UK constituencies elected two or more MPs together by "multi-member plurality" (block vote): each elector could cast one vote per available seat, and the top vote-getters overall were all elected. In those elections below, "Elected" lists every MP returned, "Votes" is the count that secured the last seat, and "Majority" is the gap between that seat and the first candidate who missed out.
Full Election History, 1832–2019
| Election | Elected | Votes | Vote Share | Runner-up | Majority | Turnout |
|---|---|---|---|---|---|---|
| 1832 | Harry Verney (Whig); Thomas Francis Fremantle (Conservative) | 156 | 37.3% (top seat) | George Morgan (Whig) | 18 (3.8 pts) | 78.2% |
| 1835 | Thomas Francis Fremantle (Conservative); Harry Verney (Whig) | Elected unopposed — no other candidate stood, no vote count on record | 0.0% | |||
| 1837 | Thomas Francis Fremantle (Conservative); Harry Verney (Whig) | 157 | 44.4% (top seat) | John Chetwode (Conservative) | 19 (3.6 pts) | 77.9% |
| 1841 | Thomas Francis Fremantle (Conservative); John Chetwode (Conservative) | Elected unopposed — no other candidate stood, no vote count on record | 0.0% | |||
| 1847 | John Hall (Conservative); Richard Plantagenet Campbell Temple-Nugent-Brydges-Chandos-Grenville (Conservative) | Elected unopposed — no other candidate stood, no vote count on record | 0.0% | |||
| 1852 | John Hall (Conservative); Richard Plantagenet Campbell Temple-Nugent-Brydges-Chandos-Grenville (Conservative) | Elected unopposed — no other candidate stood, no vote count on record | 0.0% | |||
| 1857 | Harry Verney (Whig); John Hall (Conservative) | 151 | 34.5% (top seat) | Richard Cavendish (Whig) | 17 (3.0 pts) | 79.1% |
| 1859 | Harry Verney (Liberal); John Gellibrand Hubbard (Conservative) | 196 | 36.6% (top seat) | George William Barrington (Conservative) | 49 (9.1 pts) | 74.3% |
| 1865 | Harry Verney (Liberal); John Gellibrand Hubbard (Conservative) | Elected unopposed — no other candidate stood, no vote count on record | 0.0% | |||
| 1868 | Harry Verney (Liberal) | 463 | 57.8% | John Gellibrand Hubbard (Conservative) | 125 (15.6 pts) | 84.5% |
| 1874 | Egerton Hubbard (Conservative) | 589 | 60.1% | Harry Verney (Liberal) | 198 (20.2 pts) | 87.7% |
| 1880 | Harry Verney (Liberal) | 528 | 50.4% | Egerton Hubbard (Conservative) | 8 (0.8 pts) | 91.2% |
| 1885 | Edmund Hope Verney (Liberal) | 5,462 | 57.7% | Samuel Wilson (Conservative) | 1,456 (15.4 pts) | 83.7% |
| 1886 | Egerton Hubbard (Conservative) | 4,460 | 50.4% | Edmund Hope Verney (Liberal) | 71 (0.8 pts) | 78.3% |
| 1892 | Herbert Samuel Leon (Liberal) | 5,153 | 52.3% | William Walter Carlile (Conservative) | 449 (4.6 pts) | 85.6% |
| 1895 | William Walter Carlile (Conservative) | 5,266 | 52.2% | Herbert Samuel Leon (Liberal) | 436 (4.3 pts) | 88.6% |
| 1900 | William Walter Carlile (Conservative) | 5,101 | 52.1% | Hubert George Beaumont (Liberal) | 417 (4.3 pts) | 83.7% |
| 1906 | Frederick William Verney (Liberal) | 6,253 | 57.2% | Thomas Francis Fremantle (Conservative) | 1,580 (14.5 pts) | 88.6% |
| Jan 1910 | Frederick William Verney (Liberal) | 6,055 | 50.5% | Thomas Francis Fremantle (Conservative) | 111 (0.9 pts) | 91.7% |
| Dec 1910 | Harry Calvert Williams Verney (Liberal) | 6,029 | 56.2% | Francis Tyringham Higgins Bernard (Liberal Unionist) | 327 (3.0 pts) | 89.7% |
| 1918 | George Edward Wentworth Bowyer (Unionist) | 12,441 | 53.7% | John Scurr (Labour) | 4,960 (21.4 pts) | 63.6% |
| 1922 | George Edward Wentworth Bowyer (Unionist) | 13,751 | 49.3% | Owen Connellan (Labour) | 6,408 (23.0 pts) | 76.9% |
| 1923 | George Edward Wentworth Bowyer (Unionist) | 13,351 | 53.0% | Edward Pay (Labour) | 1,527 (6.1 pts) | 68.4% |
| 1924 | George Edward Wentworth Bowyer (Unionist) | 15,129 | 51.8% | Edward Pay (Labour) | 6,190 (21.2 pts) | 78.1% |
| 1929 | George Edward Wentworth Bowyer (Unionist) | 16,375 | 45.7% | James Lievsley George (Labour) | 4,657 (13.0 pts) | 79.6% |
| 1931 | George Edward Wentworth Bowyer (Conservative) | 23,783 | 67.0% | James Lievsley George (Labour) | 12,047 (33.9 pts) | 77.7% |
| 1935 | George Edward Wentworth Bowyer (Conservative) | 20,616 | 58.0% | Joseph Alfred Sparks (Labour) | 5,688 (16.0 pts) | 75.1% |
| 1945 | Aidan Merivale Crawley (Labour) | 22,302 | 54.7% | Geoffrey Lionel Berry (Conservative) | 3,845 (9.4 pts) | 71.6% |
| 1950 | Aidan Merivale Crawley (Labour) | 20,782 | 47.1% | Sydney Frank Markham (Conservative) | 1,654 (3.8 pts) | 86.2% |
| 1951 | Sydney Frank Markham (Conservative) | 22,688 | 50.1% | Aidan Merivale Crawley (Labour) | 54 (0.1 pts) | 86.6% |
| 1955 | Sir Sydney Frank Markham (Conservative) | 23,250 | 51.3% | David Gordon Evans (Labour) | 1,140 (2.5 pts) | 85.1% |
| 1959 | Sir Sydney Frank Markham (Conservative) | 22,304 | 47.0% | Ian Robert Maxwell (Labour) | 1,746 (3.7 pts) | 86.4% |
| 1964 | Ian Robert Maxwell (Labour) | 23,085 | 45.9% | Mary Elaine Kellett (Conservative) | 1,481 (2.9 pts) | 86.5% |
| 1966 | Ian Maxwell (Labour) | 24,854 | 47.5% | Mary Kellett (Conservative) | 2,254 (4.3 pts) | 85.9% |
| 1970 | William Benyon (Conservative) | 28,088 | 47.5% | Ian Maxwell (Labour) | 2,521 (4.3 pts) | 81.8% |
| Oct 1974 | William Benyon (Conservative) | 26,597 | 42.2% | Ian Maxwell (Labour) | 2,918 (4.6 pts) | 79.7% |
| Feb 1974 | William Benyon (Conservative) | 27,179 | 40.7% | Ian Maxwell (Labour) | 3,123 (4.7 pts) | 85.2% |
| 1979 | William Benyon (Conservative) | 41,719 | 51.3% | John Beresford Fryer (Labour) | 13,967 (17.2 pts) | 78.6% |
| 1983 | George Walden (Conservative) | 27,522 | 56.9% | Richard Hood Jack Dudley Ryder (Liberal) | 13,938 (28.8 pts) | 77.1% |
| 1987 | George Walden (Conservative) | 32,162 | 58.6% | Charles Burke (Liberal) | 18,526 (33.8 pts) | 78.3% |
| 1992 | George Walden (Conservative) | 29,496 | 62.5% | Tudor Jones (Liberal Democrat) | 19,791 (41.9 pts) | 84.2% |
| 1997 | John Bercow (Conservative) | 24,594 | 49.8% | Robert Lehmann (Labour) | 12,386 (25.1 pts) | 78.5% |
| 2001 | John Bercow (Conservative) | 24,296 | 53.7% | Mark Seddon (Labour) | 13,325 (29.4 pts) | 69.4% |
| 2005 | John Bercow (Conservative) | 27,748 | 57.4% | David Greene (Labour) | 18,129 (37.5 pts) | 68.7% |
| 2010 | John Bercow (Speaker (non-party)) | 22,860 | 47.3% | John Stevens (Independent) | 12,529 (25.9 pts) | 65.9% |
| 2015 | John Bercow (Speaker (non-party)) | 34,617 | 64.5% | Dave Fowler (UKIP) | 22,942 (42.7 pts) | 71.0% |
| 2017 | John Bercow (Speaker (non-party)) | 34,299 | 65.1% | Michael Sheppard (Green) | 25,725 (48.8 pts) | 68.6% |
| 2019 | Greg Smith (Conservative) | 37,035 | 58.4% | Stephen Dorrell (Liberal Democrat) | 20,411 (32.2 pts) | 76.6% |
Full Result Breakdown by Election
1832 (2 seats)
| Candidate | Party | Votes | Share | Elected |
|---|---|---|---|---|
| Harry Verney | Whig | 175 | 37.3% | Yes |
| Thomas Francis Fremantle | Conservative | 156 | 33.3% | Yes |
| George Morgan | Whig | 138 | 29.4% | No |
1835 (2 seats)
| Candidate | Party | Votes | Share | Elected |
|---|---|---|---|---|
| Thomas Francis Fremantle | Conservative | Unopposed | Yes | |
| Harry Verney | Whig | Unopposed | Yes | |
1837 (2 seats)
| Candidate | Party | Votes | Share | Elected |
|---|---|---|---|---|
| Thomas Francis Fremantle | Conservative | 236 | 44.4% | Yes |
| Harry Verney | Whig | 157 | 29.6% | Yes |
| John Chetwode | Conservative | 138 | 26.0% | No |
1841 (2 seats)
| Candidate | Party | Votes | Share | Elected |
|---|---|---|---|---|
| Thomas Francis Fremantle | Conservative | Unopposed | Yes | |
| John Chetwode | Conservative | Unopposed | Yes | |
1847 (2 seats)
| Candidate | Party | Votes | Share | Elected |
|---|---|---|---|---|
| John Hall | Conservative | Unopposed | Yes | |
| Richard Plantagenet Campbell Temple-Nugent-Brydges-Chandos-Grenville | Conservative | Unopposed | Yes | |
1852 (2 seats)
| Candidate | Party | Votes | Share | Elected |
|---|---|---|---|---|
| John Hall | Conservative | Unopposed | Yes | |
| Richard Plantagenet Campbell Temple-Nugent-Brydges-Chandos-Grenville | Conservative | Unopposed | Yes | |
1857 (2 seats)
| Candidate | Party | Votes | Share | Elected |
|---|---|---|---|---|
| Harry Verney | Whig | 193 | 34.5% | Yes |
| John Hall | Conservative | 151 | 27.0% | Yes |
| Richard Cavendish | Whig | 134 | 23.9% | No |
| Philip Box | Conservative | 82 | 14.6% | No |
1859 (2 seats)
| Candidate | Party | Votes | Share | Elected |
|---|---|---|---|---|
| Harry Verney | Liberal | 198 | 36.6% | Yes |
| John Gellibrand Hubbard | Conservative | 196 | 36.2% | Yes |
| George William Barrington | Conservative | 147 | 27.2% | No |
1865 (2 seats)
| Candidate | Party | Votes | Share | Elected |
|---|---|---|---|---|
| Harry Verney | Liberal | Unopposed | Yes | |
| John Gellibrand Hubbard | Conservative | Unopposed | Yes | |
1868
| Candidate | Party | Votes | Share | Elected |
|---|---|---|---|---|
| Harry Verney | Liberal | 463 | 57.8% | Yes |
| John Gellibrand Hubbard | Conservative | 338 | 42.2% | No |
1874
| Candidate | Party | Votes | Share | Elected |
|---|---|---|---|---|
| Egerton Hubbard | Conservative | 589 | 60.1% | Yes |
| Harry Verney | Liberal | 391 | 39.9% | No |
1880
| Candidate | Party | Votes | Share | Elected |
|---|---|---|---|---|
| Harry Verney | Liberal | 528 | 50.4% | Yes |
| Egerton Hubbard | Conservative | 520 | 49.6% | No |
1885
| Candidate | Party | Votes | Share | Elected |
|---|---|---|---|---|
| Edmund Hope Verney | Liberal | 5,462 | 57.7% | Yes |
| Samuel Wilson | Conservative | 4,006 | 42.3% | No |
1886
| Candidate | Party | Votes | Share | Elected |
|---|---|---|---|---|
| Egerton Hubbard | Conservative | 4,460 | 50.4% | Yes |
| Edmund Hope Verney | Liberal | 4,389 | 49.6% | No |
1892
| Candidate | Party | Votes | Share | Elected |
|---|---|---|---|---|
| Herbert Samuel Leon | Liberal | 5,153 | 52.3% | Yes |
| William Walter Carlile | Conservative | 4,704 | 47.7% | No |
1895
| Candidate | Party | Votes | Share | Elected |
|---|---|---|---|---|
| William Walter Carlile | Conservative | 5,266 | 52.2% | Yes |
| Herbert Samuel Leon | Liberal | 4,830 | 47.8% | No |
1900
| Candidate | Party | Votes | Share | Elected |
|---|---|---|---|---|
| William Walter Carlile | Conservative | 5,101 | 52.1% | Yes |
| Hubert George Beaumont | Liberal | 4,684 | 47.9% | No |
1906
| Candidate | Party | Votes | Share | Elected |
|---|---|---|---|---|
| Frederick William Verney | Liberal | 6,253 | 57.2% | Yes |
| Thomas Francis Fremantle | Conservative | 4,673 | 42.8% | No |
Jan 1910
| Candidate | Party | Votes | Share | Elected |
|---|---|---|---|---|
| Frederick William Verney | Liberal | 6,055 | 50.5% | Yes |
| Thomas Francis Fremantle | Conservative | 5,944 | 49.5% | No |
Dec 1910
| Candidate | Party | Votes | Share | Elected |
|---|---|---|---|---|
| Harry Calvert Williams Verney | Liberal | 6,029 | 56.2% | Yes |
| Francis Tyringham Higgins Bernard | Liberal Unionist | 5,702 | 53.1% | No |
1918
| Candidate | Party | Votes | Share | Elected |
|---|---|---|---|---|
| George Edward Wentworth Bowyer | Unionist | 12,441 | 53.7% | Yes |
| John Scurr | Labour | 7,481 | 32.3% | No |
| Harry Calvert Williams Verney | Liberal | 3,250 | 14.0% | No |
1922
| Candidate | Party | Votes | Share | Elected |
|---|---|---|---|---|
| George Edward Wentworth Bowyer | Unionist | 13,751 | 49.3% | Yes |
| Owen Connellan | Labour | 7,343 | 26.3% | No |
| Charles Edward Henry Hobhouse | Liberal | 6,789 | 24.3% | No |
1923
| Candidate | Party | Votes | Share | Elected |
|---|---|---|---|---|
| George Edward Wentworth Bowyer | Unionist | 13,351 | 53.0% | Yes |
| Edward Pay | Labour | 11,824 | 47.0% | No |
1924
| Candidate | Party | Votes | Share | Elected |
|---|---|---|---|---|
| George Edward Wentworth Bowyer | Unionist | 15,129 | 51.8% | Yes |
| Edward Pay | Labour | 8,939 | 30.6% | No |
| Richard Kingesley-Johnson | Liberal | 5,144 | 17.6% | No |
1929
| Candidate | Party | Votes | Share | Elected |
|---|---|---|---|---|
| George Edward Wentworth Bowyer | Unionist | 16,375 | 45.7% | Yes |
| James Lievsley George | Labour | 11,718 | 32.7% | No |
| Norman Easedale Crump | Liberal | 7,713 | 21.5% | No |
1931
| Candidate | Party | Votes | Share | Elected |
|---|---|---|---|---|
| George Edward Wentworth Bowyer | Conservative | 23,783 | 67.0% | Yes |
| James Lievsley George | Labour | 11,736 | 33.0% | No |
1935
| Candidate | Party | Votes | Share | Elected |
|---|---|---|---|---|
| George Edward Wentworth Bowyer | Conservative | 20,616 | 58.0% | Yes |
| Joseph Alfred Sparks | Labour | 14,928 | 42.0% | No |
1945
| Candidate | Party | Votes | Share | Elected |
|---|---|---|---|---|
| Aidan Merivale Crawley | Labour | 22,302 | 54.7% | Yes |
| Geoffrey Lionel Berry | Conservative | 18,457 | 45.3% | No |
1950
| Candidate | Party | Votes | Share | Elected |
|---|---|---|---|---|
| Aidan Merivale Crawley | Labour | 20,782 | 47.1% | Yes |
| Sydney Frank Markham | Conservative | 19,128 | 43.4% | No |
| John Denis Glbert Kellock | Liberal | 4,196 | 9.5% | No |
1951
| Candidate | Party | Votes | Share | Elected |
|---|---|---|---|---|
| Sydney Frank Markham | Conservative | 22,688 | 50.1% | Yes |
| Aidan Merivale Crawley | Labour | 22,634 | 49.9% | No |
1955
| Candidate | Party | Votes | Share | Elected |
|---|---|---|---|---|
| Sir Sydney Frank Markham | Conservative | 23,250 | 51.3% | Yes |
| David Gordon Evans | Labour | 22,110 | 48.7% | No |
1959
| Candidate | Party | Votes | Share | Elected |
|---|---|---|---|---|
| Sir Sydney Frank Markham | Conservative | 22,304 | 47.0% | Yes |
| Ian Robert Maxwell | Labour | 20,558 | 43.3% | No |
| Evan Laurence Frederick Richards | Liberal | 4,577 | 9.6% | No |
1964
| Candidate | Party | Votes | Share | Elected |
|---|---|---|---|---|
| Ian Robert Maxwell | Labour | 23,085 | 45.9% | Yes |
| Mary Elaine Kellett | Conservative | 21,604 | 43.0% | No |
| Jack Raphael Wallis | Liberal | 5,578 | 11.1% | No |
1966
| Candidate | Party | Votes | Share | Elected |
|---|---|---|---|---|
| Ian Maxwell | Labour | 24,854 | 47.5% | Yes |
| Mary Kellett | Conservative | 22,600 | 43.2% | No |
| John Cornwall | Liberal | 4,914 | 9.4% | No |
1970
| Candidate | Party | Votes | Share | Elected |
|---|---|---|---|---|
| William Benyon | Conservative | 28,088 | 47.5% | Yes |
| Ian Maxwell | Labour | 25,567 | 43.2% | No |
| John Cornwall | Liberal | 5,475 | 9.3% | No |
Oct 1974
| Candidate | Party | Votes | Share | Elected |
|---|---|---|---|---|
| William Benyon | Conservative | 26,597 | 42.2% | Yes |
| Ian Maxwell | Labour | 23,679 | 37.6% | No |
| Samuel Bennett Crooks | Liberal | 12,707 | 20.2% | No |
Feb 1974
| Candidate | Party | Votes | Share | Elected |
|---|---|---|---|---|
| William Benyon | Conservative | 27,179 | 40.7% | Yes |
| Ian Maxwell | Labour | 24,056 | 36.0% | No |
| Samuel Bennett Crooks | Liberal | 15,519 | 23.2% | No |
1979
| Candidate | Party | Votes | Share | Elected |
|---|---|---|---|---|
| William Benyon | Conservative | 41,719 | 51.3% | Yes |
| John Beresford Fryer | Labour | 27,752 | 34.1% | No |
| Samuel Bennett Crooks | Liberal | 11,045 | 13.6% | No |
| Michael Paul Smith | National Front | 803 | 1.0% | No |
1983
| Candidate | Party | Votes | Share | Elected |
|---|---|---|---|---|
| George Walden | Conservative | 27,522 | 56.9% | Yes |
| Richard Hood Jack Dudley Ryder | Liberal | 13,584 | 28.1% | No |
| Martyn Groucutt | Labour | 7,272 | 15.0% | No |
1987
| Candidate | Party | Votes | Share | Elected |
|---|---|---|---|---|
| George Walden | Conservative | 32,162 | 58.6% | Yes |
| Charles Burke | Liberal | 13,636 | 24.9% | No |
| Martyn Groucutt | Labour | 9,053 | 16.5% | No |
1992
| Candidate | Party | Votes | Share | Elected |
|---|---|---|---|---|
| George Walden | Conservative | 29,496 | 62.5% | Yes |
| Tudor Jones | Liberal Democrat | 9,705 | 20.6% | No |
| Keith White | Labour | 7,662 | 16.2% | No |
| Lawrence Sheaff | Natural Law | 353 | 0.7% | No |
1997
| Candidate | Party | Votes | Share | Elected |
|---|---|---|---|---|
| John Bercow | Conservative | 24,594 | 49.8% | Yes |
| Robert Lehmann | Labour | 12,208 | 24.7% | No |
| Neil Stuart | Liberal Democrat | 12,175 | 24.6% | No |
| Geoffrey Clements | Natural Law | 421 | 0.9% | No |
2001
| Candidate | Party | Votes | Share | Elected |
|---|---|---|---|---|
| John Bercow | Conservative | 24,296 | 53.7% | Yes |
| Mark Seddon | Labour | 10,971 | 24.2% | No |
| Isobel Wilson | Liberal Democrat | 9,037 | 20.0% | No |
| Christopher Silcock | UKIP | 968 | 2.1% | No |
2005
| Candidate | Party | Votes | Share | Elected |
|---|---|---|---|---|
| John Bercow | Conservative | 27,748 | 57.4% | Yes |
| David Greene | Labour | 9,619 | 19.9% | No |
| Luke Croydon | Liberal Democrat | 9,508 | 19.7% | No |
| David Williams | UKIP | 1,432 | 3.0% | No |
2010
| Candidate | Party | Votes | Share | Elected |
|---|---|---|---|---|
| John Bercow | Speaker (non-party) | 22,860 | 47.3% | Yes |
| John Stevens | Independent | 10,331 | 21.4% | No |
| Nigel Farage | UKIP | 8,401 | 17.4% | No |
| Patrick Phillips | Independent | 2,394 | 5.0% | No |
| Debbie Martin | Independent | 1,270 | 2.6% | No |
| Lynne Mozar | BNP | 980 | 2.0% | No |
| Colin Dale-Mills | Official Monster Raving Loony Party | 856 | 1.8% | No |
| Geoff Howard | Independent | 435 | 0.9% | No |
| David Hews | Christian Party, Proclaiming Christ's Lordship | 369 | 0.8% | No |
| Anthony Watts | Independent | 332 | 0.7% | No |
| Simon Strutt | Cut The Deficit | 107 | 0.2% | No |
2015
| Candidate | Party | Votes | Share | Elected |
|---|---|---|---|---|
| John Bercow | Speaker (non-party) | 34,617 | 64.5% | Yes |
| Dave Fowler | UKIP | 11,675 | 21.7% | No |
| Alan Francis | Green | 7,400 | 13.8% | No |
2017
| Candidate | Party | Votes | Share | Elected |
|---|---|---|---|---|
| John Bercow | Speaker (non-party) | 34,299 | 65.1% | Yes |
| Michael Sheppard | Green | 8,574 | 16.3% | No |
| Scott Raven | Independent | 5,638 | 10.7% | No |
| Brian Mapletoft | UKIP | 4,168 | 7.9% | No |
2019
| Candidate | Party | Votes | Share | Elected |
|---|---|---|---|---|
| Greg Smith | Conservative | 37,035 | 58.4% | Yes |
| Stephen Dorrell | Liberal Democrat | 16,624 | 26.2% | No |
| David Morgan | Labour | 7,638 | 12.0% | No |
| Andrew Bell | Brexit Party | 1,286 | 2.0% | No |
| Ned Thompson | Independent | 681 | 1.1% | No |
| Antonio Vitiello | English Democrats | 194 | 0.3% | No |
Margin Over Time
Winning margin (percentage points) at each election, coloured by the winning party.
Trend
Buckingham has been contested at 48 general elections on record since 1832. Parties that have won a seat here over that span: Whig, Conservative, Liberal, Unionist, Labour, Speaker (non-party).
Frequently Asked Questions
Who won Buckingham in the 2019 general election?
Conservative won Buckingham in 2019 with 37,035 votes (58.4%), a majority of 20,411 votes over Liberal Democrat in second place.
Which parties have won Buckingham since 1832?
Since 1832, Buckingham has been won by: Conservative, Labour, Liberal, Speaker (non-party), Unionist, Whig.
What was the closest result in Buckingham?
The closest result on record for Buckingham was 1951, when Conservative beat Labour by just 54 votes (0.1 percentage points).
Did Buckingham ever elect more than one MP at a time?
Yes -- like most UK constituencies before the Redistribution of Seats Act 1885, Buckingham elected multiple MPs at once in some elections on this page (a system called multi-member plurality, or 'block vote'), each voter casting one vote per available seat.